XmlSchemaType.IsDerivedFrom 方法

定义

命名空间:
System.Xml.Schema
程序集:
netstandard.dll, System.Xml.ReaderWriter.dll
程序集:
System.Xml.ReaderWriter.dll
程序集:
System.Xml.dll
程序集:
netstandard.dll
Source:
XmlSchemaType.cs
Source:
XmlSchemaType.cs
Source:
XmlSchemaType.cs
Source:
XmlSchemaType.cs
Source:
XmlSchemaType.cs

返回一个值，该值指示指定的派生架构类型是否派生自指定的基架构类型。

public:
 static bool IsDerivedFrom(System::Xml::Schema::XmlSchemaType ^ derivedType, System::Xml::Schema::XmlSchemaType ^ baseType, System::Xml::Schema::XmlSchemaDerivationMethod except);
public static bool IsDerivedFrom(System.Xml.Schema.XmlSchemaType? derivedType, System.Xml.Schema.XmlSchemaType? baseType, System.Xml.Schema.XmlSchemaDerivationMethod except);
public static bool IsDerivedFrom(System.Xml.Schema.XmlSchemaType derivedType, System.Xml.Schema.XmlSchemaType baseType, System.Xml.Schema.XmlSchemaDerivationMethod except);
static member IsDerivedFrom : System.Xml.Schema.XmlSchemaType * System.Xml.Schema.XmlSchemaType * System.Xml.Schema.XmlSchemaDerivationMethod -> bool
Public Shared Function IsDerivedFrom (derivedType As XmlSchemaType, baseType As XmlSchemaType, except As XmlSchemaDerivationMethod) As Boolean

参数

derivedType
XmlSchemaType

要测试的 XmlSchemaType 派生。

baseType
XmlSchemaType

要测试派生XmlSchemaType依据的基XmlSchemaType数。

except
XmlSchemaDerivationMethod

表示 XmlSchemaDerivationMethod 要从测试中排除的类型派生方法的值之一。

返回

Boolean

true 如果派生类型派生自基类型，则为否则，为 false.

示例

下面是方法的示例 IsDerivedFrom 。

XmlSchemaType xsdInteger = XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Integer);
XmlSchemaType xsdPositiveInteger = XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.PositiveInteger);

// true
Console.WriteLine(XmlSchemaType.IsDerivedFrom(xsdPositiveInteger, xsdInteger, XmlSchemaDerivationMethod.None));

// false
Console.WriteLine(XmlSchemaType.IsDerivedFrom(xsdPositiveInteger, xsdInteger, XmlSchemaDerivationMethod.Restriction));

Dim xsdInteger As XmlSchemaType = XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.Integer)
Dim xsdPositiveInteger As XmlSchemaType = XmlSchemaType.GetBuiltInSimpleType(XmlTypeCode.PositiveInteger)

' True
Console.WriteLine(XmlSchemaType.IsDerivedFrom(xsdPositiveInteger, xsdInteger, XmlSchemaDerivationMethod.None))

' False
Console.WriteLine(XmlSchemaType.IsDerivedFrom(xsdPositiveInteger, xsdInteger, XmlSchemaDerivationMethod.Restriction))

适用于